what the eye doesn't see, the heart doesn't grieve over
messlessness
carefree
if it's all the same
fail-safe
no news is good news
unproblematic
all quiet on the Western Front
checkmate
peaceful
no problemo
unhappening
holding pattern
smooth sailing
never a dull moment
you cannot put the same shoe on every foot
unlamented
unmourned
undistressing
undistraught
never-say-die
eventless
stalemate
untroublesome
nullary
clear sailing
no harm done
unharmed
nondisrupting
nontroublesome
conscience-proof
don't sweat the small stuff
sudden death
clean bill of health
nonaffected
unanguished
mobilism
airtight
unlachrymose
unblemished
where there's no sense there's no feeling
unrespited
faultlessness
unsuccumbing
nonproblematic
unrepentant
regardless
rearrange the deck chairs on the Titanic
unworried
undesponding